The first is a bug in /etc/sysconfig/network-scripts/ifup-ppp: --- ifup-ppp.dist Thu Oct 15 17:07:52 1998 +++ ifup-ppp Sun Jan 31 20:31:04 1999 @@ -6,7 +6,7 @@ if [ "$1" != daemon ] ; then # disconnect stdin, out, err to disassociate from controlling tty # so that no HUPs will get through. - $0 daemon $*& </dev/null >/dev/null 2>/dev/null + $0 daemon $* </dev/null >/dev/null 2>/dev/null & exit 0 fi shift The redirections don't seem to take effect unless they come before the &. I discovered this when writing a CGI script containing the command /usr/sbin/usernetctl ppp0 up. Because ifup-ppp never disconnected from stdout, Apache never saw stdout closed and didn't properly close the HTTP connection. Doing /usr/sbin/usernetctl ppp0 up &> /dev/null < /dev/null to forcibly redirect stdin/out/err works around the problem. Making the above change to ifup-ppp fixes the root cause. (Thanks to James Griffiths <my> for helping to track this one down.) This probably applies to all architectures, but I don't have access to any others to test on.
fixed in initscripts-3.84